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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 11/11/2025

Interruption is clearly visible on WebSDR Twente (The Netherlands). websdr.ewi.utwente.nl:8901

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 11/11/2025

Interruption is clearly visible on WebSDR Twente (The Netherlands). websdr.ewi.utwente.nl:8901

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 11/11/2025

HF radio interrupted this morning after an X5 solar flare hits Earths ionosphere. #WebSDRtwente

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 18/06/2025

ISS solar transit this morning 🙂 Castricum (NL) #SeestarS50

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 11/05/2025

Last year I captured some incredible video of the aurora during the Gannon Solar Storm. Thanks to @raymondkphoto.bsky.social it’s now beautifully edited and brought to life! 🤩 Watch the full video on Youtube: youtu.be/NGR6kUQebkY

youtu.be

Gannon Solar Storm Lights Up the Skies – Aurora Above the Netherlands

YouTube video by Keeszify

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 29/04/2025

Globular clusters are my favorite objects in the night sky. Just stars. Lots of stars. This one is NGC 6760, a compact cluster containing an estimated 200.000 stars. These stars were born together and have been moving as a group through the Milky Way ever since. 280x10s subs, SeestarS50.

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 16/04/2025

At the peak it was raining, but I still managed to catch some weak aurora :-D Egmond aan Zee (NL) 0:47 CEST #aurora #poollicht

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 11/04/2025

There she is! Comet C/2025 F2 (SWAN) 🥰🥰 It was tricky: low on the horizon, light pollution from the city, and even some thin clouds… but I got her! 🥳 (Egmond aan Zee - NL) #SeestarS50

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Ronald Bijtenhoorn @astronald.bsky.social · 07/04/2025

🔭 Last attempt to capture the Orion Nebula (M42), it slowly disappears into the evening twilight to reappear in the early morning of September. #Astrophotography #seestar #M42 @kat-astro-bot.bsky.social

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 06/04/2025

De zon vandaag, met de Seestar S50 :) Van zonnevlekgroep AR14048 is niet veel meer over helaas.

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 31/03/2025

Thnx!!! 😀 Ja klopt. Ik heb een Baader zonnefilter voor mijn Seestar 😊

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Koen van den Driesche (Waddensky) @waddensky.nl · 29/03/2025

Wat hebben we genoten van de #zonsverduistering en de heerlijke lunch bij Het Lage Noorden! 🥰#sterrenkijken #friesland

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Steven de Winter @stevendew.bsky.social · 29/03/2025

De gedeeltelijke zonsverduistering geprojecteerd op de grond via een vergiet (tip van @govertschilling.nl). De hap uit de zon is mooi zichtbaar!

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Ronald Bijtenhoorn @astronald.bsky.social · 29/03/2025

Compilation of the partial solar eclipse, during the maximum at 12:10 about 24% of the sun was covered. It was a bit of a challenge to take the pictures between the clouds. 😊 🔭 #seestar #eclips #solareclips #sun #moon

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Maurice Toet @mauricetoet.bsky.social · 29/03/2025

Exactly 19 years after the total solar #eclipse I observed in Libya, a partial solar eclipse was visible in the Netherlands today. Fortunately, it was clear around the maximum to capture an image.

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 29/03/2025

Composite of today’s partial solar eclipse 🌞🌑 9 images taken with the Seestar S50, timed to capture the full progression of the eclipse. #zonsverduistering #SolarEclipse #Eclipse2025 #SeestarS50

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 25/03/2025

Wow! What amazing photos! 🤩 Coincidence, or did you know this was going to happen?

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Sonja Hartl @sonjahartl7.eurosky.social · 24/03/2025

Bitte was das am eben am Himmel? Fast moving bright object (Like ISS) + spiral lights from west to east in the night sky some minutes ago @dlr-next.bsky.social @yousitonmyspot.bsky.social @aswogeosphere.bsky.social @nikzimmer87.bsky.social @manueloberhuber.bsky.social @jureatanackov.bsky.social

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 23/03/2025

Aha! Dank! Geen president ofzo dus 😅

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 20/03/2025

Zojuist rond 8 uur boven Egmond: een groot vliegtuig begeleid door 6 straaljagers, van west naar oost. Weet iemand wat dit was? Ik zie ze niet op de radar.

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 19/03/2025

Thnx!! She's gone now. I was too late :-(

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 19/03/2025

She's a bit weak, but she's there!! 💃💃 #poollicht #aurora

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 17/03/2025

You are welcome to join the EU ❤️❤️❤️

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 17/03/2025

Today 10 years ago, March 17 2015: my first BIG aurora!💃 And my first naked eye aurora! It was foggy and humid, but that didn’t spoil the fun. I missed STEVE because I was to focused on the north, but I didn’t know any better back then! 😄 #poollicht #Egmond

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Huub Eggen @huubeggen.bsky.social · 14/03/2025

De totale maansverduistering vanochtend, zoals deels zichtbaar vanuit Nederland. Begin intreden bijschaduw (1), begin intreden kernschaduw (2) en net voor de Maan onder ging (3). @leonoor.bsky.social @johanklos.bsky.social @govertschilling.nl @suerob7.bsky.social @roelvanderheijden.bsky.social

The image shows the full Moon, just as it started to enter the partial shade (penumbra of Earth) this morning.

The image shows the full Moon as it has started to enter the full shade of Earth (umbra) this morning. The left side of the Moon is gettting dark here. This image, as well as the previous one and the next one have been taken at ISO 200. Exposure time needed to get longer at every step of the eclipse, nicely showing the diminishing brightness of the Moon during entry of the Earth's shadow.

The image shows the full Moon with a larger part at left in dark shadow. This was just before the Moon set here. The sky was already quite bright with sunrise less than half an hour away.

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 14/03/2025

Ging dikke prima hier in Egmond, in het westen helder 😍

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 05/03/2025

Omg, you did it! Awesome! 😍😍

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raymondkphoto.bsky.social @raymondkphoto.bsky.social · 21/11/2024

April 8th, Arkansas USA. I witnessed one of the most unique phenomena in Creation. ..A Total Solar Eclipse. Gazing upwards together with a group of fellow Dutch countrymen and other eclipse chasers, it was an experienceI will treasure for a long time. ..and hopefully be able to witness again..

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 18/02/2025

Another clear night, another deepsky target: Markarian's Chain 🥰 Seestar S30, 1048 subs, mosaic. 🔭

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 17/02/2025

Wauw!!!! 😍 Die staat er prachtig op! 🥰

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Esther Hanko @oetie.nl · 17/02/2025

I braved the cold to take some more videos of the planets. Here's Jupiter from my backyard in Purmerend, NL. 🔭 #astrophotography

The planet Jupiter, a gray/brown banded globe with little lighter and dakrer waves and dots on the stripes.

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 17/02/2025

Last night clear skies! Time to play with the Seestar S30 telescope 🥰 Messier 44, 752 subs (mosaic) (Sorry, I made a mistake, so I posted it again)

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Maurice Toet @mauricetoet.bsky.social · 16/02/2025

This one never gets old… The Horsehead Nebula in Orion. Automated sequence running with the ZWO ASIair Pro + 📷 ASI2600MM Pro + 🔭 Takahashi ε-180ED @ 500 mm f/2.8 + 🔴 Baader Planetarium Hα f/3 Ultra-Highspeed filter (3.5nm).

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Esther Hanko @oetie.nl · 02/02/2025

Had another go at #Jupiter last night with my trusty 18cm maksutov in my backyard in Purmerend, the Netherlands. With the Great Red Spot, too. #astrophotography 🔭 Stil have lots of data to go through, so more to come :)

Jupiter, a gray/brown striped planet with the Great Red Spot that's not too great at the moment at the bottom left.

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Koen van den Driesche (Waddensky) @waddensky.nl · 02/02/2025

Maan door wat lichte sluierbewolking, 22% verlicht, vanavond zondag 2 februari vanuit Friesland. #astrofotografie #maan #sterrenkijken #astronomie #sterrenkunde

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 02/02/2025

Last night we finally had clear skies again 😍 The Seestar telescope was happily at work, and here’s the result: NGC2237 (mosaic), M44 (mosaic) and M61.

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Rob Tilsley @stargazerrob.bsky.social · 01/02/2025

Last night's Jupiter #Astrophotography #Jupiter

Telescopic view, the planet is centred and appears on a featureless black background. The light, which 'belts', red zones, and mottled polar regions can be made out clearly. The North Equatorial belt appears as a deeper, more ruddy hue than the Southern. The light 'zone' south of the South Equatorial belt has a horizontal line of cloud that stars in the middle of the disk, and continues around to the west. There are some small bright spots in the northern hemisphere (storms I think), and the Southern Equatorial Belt looks turbulent with wavy pattern embedded in it (this is in contrast to the smoother looking Northern belt).

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Jure Atanackov @jureatanackov.bsky.social · 29/01/2025

An impressive cluster of active regions has rotated into view across the NE solar limb. While large & fairly rich in sunspots, these are mostly simple active regions: 3978 - alpha, 3976 - beta, 3977 - beta-gamma. Only 3977 has a more complex configuration, favourable for flares.

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 27/01/2025

Unfortunately, I’m used to it by now. It’s been almost three months since we’ve had a decent clear sky :-(

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Kees Zwaan 🇺🇦 @keeszwaan.bsky.social · 27/01/2025

On the way home: Yay, clear skies 🥳Got home and set up the telescope: clouds 😭 Welcome to the Netherlands.

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